CA2129384C - Belt tensioning system, belt tensioner therefor and methods of making the same - Google Patents
Belt tensioning system, belt tensioner therefor and methods of making the same Download PDFInfo
- Publication number
- CA2129384C CA2129384C CA002129384A CA2129384A CA2129384C CA 2129384 C CA2129384 C CA 2129384C CA 002129384 A CA002129384 A CA 002129384A CA 2129384 A CA2129384 A CA 2129384A CA 2129384 C CA2129384 C CA 2129384C
- Authority
- CA
- Canada
- Prior art keywords
- arm
- support means
- coiled spring
- belt
- wound coiled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title abstract description 10
- 238000010276 construction Methods 0.000 claims description 55
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 101150011704 Def3 gene Proteins 0.000 description 1
- 239000005862 Whey Substances 0.000 description 1
- 102000007544 Whey Proteins Human genes 0.000 description 1
- 108010046377 Whey Proteins Proteins 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229940061319 ovide Drugs 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H7/10—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1281—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H2007/0846—Means for varying tension of belts, ropes or chains comprising a mechanical stopper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Treatment Of Fiber Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A belt tensioning system, a belt tensioner therefor and methods of making the same are provided, the belt tensioning system (20) comprising a tensioner arm (24) pivotally mounted to a support (21), and a wound coiled spring (29) having opposed ends (30, 31) one (30) of which is operatively interconnected to an abutment (46) of the support (21) and the other (31) of which is operatively interconnected to the arm (24), the arm having a shoulder (62) for being engaged by the one (30) of the opposed ends (30, 31) of the wound coiled spring (29) so as to permit removal of the arm (24) and the wound coiled spring as a self-contained unit from the support (21) when the arm (24) is pivoted to a certain position where the shoulder (62) of the arm engages the one end (30) of the spring (29) and effectively moves the one end of the wound coiled spring out of contact with the abutment (46) of the support (21).
Description
BELT TENSIONING SYSTEM, BELT TENSIONER THEREFOR
AND METHODS OF MAHING THE SAME
Technical Field This invention relates to a new belt tensioning system and to a new belt tensioner therefore as well as to new methods of making such a new belt tensioning system and such a new belt tensioner.
Background Art It is known to provide a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably carried by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the would coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction. For example, see the U.S.
patent to Henderson, No. 4,886,483.
Disclosure of the Invention According to a first aspect of the present invention there is provided a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably earned by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement wherein the arm has a shoulder means for being engaged by the one of the opposed ends of the wound coiled 1 a-spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to a further aspect of the present invention there is provided a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction carried by the support means and arranged to move in a certain path relative to the support means, the tensioner comprising an arm adapted to be pivotally mounted to the support means, a pulley rotatably carried by the arm and being adapted to be in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring is adapted to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement wherein the arm has a shoulder means that is engaged by.the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit insertion and removal of the arm and the wound coiled spring as a self contained unit to and from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively holds the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to another aspect of the present invention there is provided a method of making a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction carried by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably earned by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt - 1b-construction with a force that tensions the belt construction, the improvement comprising the step of forming the arm to have a shoulder means for being engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to a further aspect of the present invention there is provided a method of making a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, the tensioner comprising ax arm adapted to be pivotally mounted to the support means, a pulley rotatably carried by the arm and being adapted to be in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring is adapted to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement comprising the step of forming the arm to have a shoulder means that is engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit insertion and removal of the arm and the wound coiled spring as a self contained unit to and from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively holds the one end of the wound coiled spring out of contact with the abutment means of the support means.
It is one of the features of this invention to provide a new belt tensioning system wherein the belt tensioner comprises an arm and a wound coiled spring that can be earned by the arm so as to provide a self contained unit and which when assembled to the support means of the system provides a means to transfer one end of the spring l7Vt) 93/ 16300 PCT/1LJS'93/012~7 . , to an abutment means on the support means so that that end of the spring will be operatively interconnected to the support means and permit the force of the spring to provide a tensioning 'force on an endless transmission belt construction that , is carried by the support~.,~means to move in an endless path thereon.
In particular, it was found according to the teachings of this invention that the arm of the belt tensioner can be provided with a shoulder means against which the one end of the wound coiled spring can engage so as to permit the arm and spring to be a self-contained unit to be inserted in the belt tensioning system and to be removed therefrom and when assembled to the support means can transfer the engagement of that one end of the spring from the shoulder means of the arm to an abutment means on °~he suppo:rt means to effectively interconnect that one end to the support means whet~by the ford eaf the spring tends tc~ pivot the arm n a direct~.on to apply a tensioning force to a beat constaruc~ibn that is engaged by a-. pulley rotatabl.y carried by -°t3n~ Arab.
For ~~amgle, ~ne embodiment of th~.s invention comp~is~s ~ belt t~nsioning system com~acisir~~ a ~uppoart means hav3.a~g an abutment means, an endless transmission be3.t~ construction carried lay °tl~e suppp~~G means and arranged ~o move in a certain path relative to the support m~ans, an ~0 arm pa.votally mounted to the support means,'a pulley rotatably carried by the arm and being in .
engagem~nt with the belt construction, and a wou~ad coiled spring h~vang opposed ends one of which is opera~avely interconnect~d to the abutment ~neana of ~5 the sugp~r~ m~ans and the rather of which is w~ <»ir~3oo ~crms~3oo~zs7 operatively interconnected to the arm whereby the farce of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that. tensions the belt construction, the arm having' ~ shoulder means for being engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self-contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
Accordingly, it is an object of this invention to provide a new belt tensioning system having .one or more of the nov~l features of this inventson as set forth above or hereinafter shown Z~ or descr3.bede Another object of this invention is to provide a new method of mak~.ng ,much a felt t~nsioning system, the method of ~tbis inventican having one or more of the nou~1 f~attares of this inventiora as set forth above ~r hereinafter shown or desC'~'~,bed a ' ' Another obj~ct ~f this invention is to provide a nbw b~lt 'G~nsioner ' for such - a be~.t tens~.oning system, the belt t~nsioner cxf this 3~ invents~n having one: or more of the nov~l features of this ~.nvention as set forth above or h~reinaft~r shown or described.
Another object of this invention is to provide a new method of making such 's belt tensioner, the method of this invention haring one WU 9~/ 16300 Pcr/us~~/olzs~
G
AND METHODS OF MAHING THE SAME
Technical Field This invention relates to a new belt tensioning system and to a new belt tensioner therefore as well as to new methods of making such a new belt tensioning system and such a new belt tensioner.
Background Art It is known to provide a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably carried by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the would coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction. For example, see the U.S.
patent to Henderson, No. 4,886,483.
Disclosure of the Invention According to a first aspect of the present invention there is provided a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably earned by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement wherein the arm has a shoulder means for being engaged by the one of the opposed ends of the wound coiled 1 a-spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to a further aspect of the present invention there is provided a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction carried by the support means and arranged to move in a certain path relative to the support means, the tensioner comprising an arm adapted to be pivotally mounted to the support means, a pulley rotatably carried by the arm and being adapted to be in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring is adapted to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement wherein the arm has a shoulder means that is engaged by.the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit insertion and removal of the arm and the wound coiled spring as a self contained unit to and from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively holds the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to another aspect of the present invention there is provided a method of making a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction carried by the support means and arranged to move in a certain path relative to the support means, an arm pivotally mounted to the support means, a pulley rotatably earned by the arm and being in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt - 1b-construction with a force that tensions the belt construction, the improvement comprising the step of forming the arm to have a shoulder means for being engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
According to a further aspect of the present invention there is provided a method of making a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction earned by the support means and arranged to move in a certain path relative to the support means, the tensioner comprising ax arm adapted to be pivotally mounted to the support means, a pulley rotatably carried by the arm and being adapted to be in engagement with the belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to the abutment means of the support means and the other of which is operatively interconnected to the arm whereby the force of the wound coiled spring is adapted to pivot the arm in a direction that urges the pulley against the belt construction with a force that tensions the belt construction, the improvement comprising the step of forming the arm to have a shoulder means that is engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit insertion and removal of the arm and the wound coiled spring as a self contained unit to and from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively holds the one end of the wound coiled spring out of contact with the abutment means of the support means.
It is one of the features of this invention to provide a new belt tensioning system wherein the belt tensioner comprises an arm and a wound coiled spring that can be earned by the arm so as to provide a self contained unit and which when assembled to the support means of the system provides a means to transfer one end of the spring l7Vt) 93/ 16300 PCT/1LJS'93/012~7 . , to an abutment means on the support means so that that end of the spring will be operatively interconnected to the support means and permit the force of the spring to provide a tensioning 'force on an endless transmission belt construction that , is carried by the support~.,~means to move in an endless path thereon.
In particular, it was found according to the teachings of this invention that the arm of the belt tensioner can be provided with a shoulder means against which the one end of the wound coiled spring can engage so as to permit the arm and spring to be a self-contained unit to be inserted in the belt tensioning system and to be removed therefrom and when assembled to the support means can transfer the engagement of that one end of the spring from the shoulder means of the arm to an abutment means on °~he suppo:rt means to effectively interconnect that one end to the support means whet~by the ford eaf the spring tends tc~ pivot the arm n a direct~.on to apply a tensioning force to a beat constaruc~ibn that is engaged by a-. pulley rotatabl.y carried by -°t3n~ Arab.
For ~~amgle, ~ne embodiment of th~.s invention comp~is~s ~ belt t~nsioning system com~acisir~~ a ~uppoart means hav3.a~g an abutment means, an endless transmission be3.t~ construction carried lay °tl~e suppp~~G means and arranged ~o move in a certain path relative to the support m~ans, an ~0 arm pa.votally mounted to the support means,'a pulley rotatably carried by the arm and being in .
engagem~nt with the belt construction, and a wou~ad coiled spring h~vang opposed ends one of which is opera~avely interconnect~d to the abutment ~neana of ~5 the sugp~r~ m~ans and the rather of which is w~ <»ir~3oo ~crms~3oo~zs7 operatively interconnected to the arm whereby the farce of the wound coiled spring tends to pivot the arm in a direction that urges the pulley against the belt construction with a force that. tensions the belt construction, the arm having' ~ shoulder means for being engaged by the one of the opposed ends of the wound coiled spring by the force of the wound coiled spring so as to permit removal of the arm and the wound coiled spring as a self-contained unit from the support means when the arm is pivoted to a certain position where the shoulder means of the arm engages the one end of the wound coiled spring and effectively moves the one end of the wound coiled spring out of contact with the abutment means of the support means.
Accordingly, it is an object of this invention to provide a new belt tensioning system having .one or more of the nov~l features of this inventson as set forth above or hereinafter shown Z~ or descr3.bede Another object of this invention is to provide a new method of mak~.ng ,much a felt t~nsioning system, the method of ~tbis inventican having one or more of the nou~1 f~attares of this inventiora as set forth above ~r hereinafter shown or desC'~'~,bed a ' ' Another obj~ct ~f this invention is to provide a nbw b~lt 'G~nsioner ' for such - a be~.t tens~.oning system, the belt t~nsioner cxf this 3~ invents~n having one: or more of the nov~l features of this ~.nvention as set forth above or h~reinaft~r shown or described.
Another object of this invention is to provide a new method of making such 's belt tensioner, the method of this invention haring one WU 9~/ 16300 Pcr/us~~/olzs~
G
or more of the novel features of this inv~wtion as set forth above or hereinafter shown or described.
Brief Descri tion of the Drawinqs The features of the invention,. and its technical advantages, can be seep from the following description of the pr~f~~°red embodiments, 'together with the claims and the accompanying drawings, in which: "i::.
FIG. 1 is a fragme~atary perspective view 1~ illustrating the new belt tensioning system of this invention utilizing the new belt tensioner of this invention;
FIG. ~ is a view similar to FIG. 1 and illustrates the support means of the system of FIG.
1 when the belt tensioner and belt construction are remO~red 'therefrom;
FIG. 3 is an exploded perspect~.ve view of the ~rarious parts that form the new belt tensioner of this invention;
FIG. 4 is an enlarged rear view of. the belt tensioner of this invention;
FIG. 5 is a side view of the belt tens~.oner o~ FIG. 9~ and is taken in the direction of the arrows 5-5 of FIG: 9:;
FIG. 6 is a fraganentary front view of the support means of FIG.
FIG. 7 ~.s a~ reduced front ~r3ew illustrating how the felt t~nsioner of FIG. ~ is initially assembled to the support aneans of FIG. 6~
30~ ' FIG. 8 is a ~riew similar to FIG. 7 and illustrates how the b~lt tensioner of FIG. 7 is to be pivoted in order to permit the same to apply a tensioning force to a belt construction that is illustrated ~.n phantom lines in FIG. 8;
FIG. 9 is a fragmentary cross--sectional 'W~ 93/~fi30A ~~i'/'U~93/Oy257 ~~.2~3~f~
Brief Descri tion of the Drawinqs The features of the invention,. and its technical advantages, can be seep from the following description of the pr~f~~°red embodiments, 'together with the claims and the accompanying drawings, in which: "i::.
FIG. 1 is a fragme~atary perspective view 1~ illustrating the new belt tensioning system of this invention utilizing the new belt tensioner of this invention;
FIG. ~ is a view similar to FIG. 1 and illustrates the support means of the system of FIG.
1 when the belt tensioner and belt construction are remO~red 'therefrom;
FIG. 3 is an exploded perspect~.ve view of the ~rarious parts that form the new belt tensioner of this invention;
FIG. 4 is an enlarged rear view of. the belt tensioner of this invention;
FIG. 5 is a side view of the belt tens~.oner o~ FIG. 9~ and is taken in the direction of the arrows 5-5 of FIG: 9:;
FIG. 6 is a fraganentary front view of the support means of FIG.
FIG. 7 ~.s a~ reduced front ~r3ew illustrating how the felt t~nsioner of FIG. ~ is initially assembled to the support aneans of FIG. 6~
30~ ' FIG. 8 is a ~riew similar to FIG. 7 and illustrates how the b~lt tensioner of FIG. 7 is to be pivoted in order to permit the same to apply a tensioning force to a belt construction that is illustrated ~.n phantom lines in FIG. 8;
FIG. 9 is a fragmentary cross--sectional 'W~ 93/~fi30A ~~i'/'U~93/Oy257 ~~.2~3~f~
view taken on line 9-9 of FIG. 7;
FIG. 10 is a Fragmentary cross-sectional view taken on line 10-10 of FIG. 3;
FIG. 11 is a fragmentary view sa~milar_ to FIG. 10 and illustrates the tensioner d'a.sposed in a , tensioning position thereof; and FIG. 12 is a view similar to FIG. 11 and illustrates the tensioner of FIG. 11 applying a tensioning force to a belt construction.
Sest Mode For Carry_in~ out the Invention ~nlhile the various features off' this invention are hereinafter illustrated and described as being particularly adapted to provide a belt tensioner for operating on a belt construction adapted to move in a bertain path, it is to be understood that the various features of -this invention can be utilized singly or in variaus combinations thereof: to p~~ovide a belt ter~sioner ~~r other systems as desired.
Therefor~, this ai.nv~ntion is not to be l~.mited to only the ea~c~bodi~ient i:llbstrated in the draw3.ng~ because the drawi~ags are merely ut~.l~.zed to illustrate cane of the wide variety ~~ uses ~~
thus invention~
Re~erri.ng nor tc~ FIG. ~ ~ the ~n~ea be7tt tensioningt system oi' -this atawent3.or~ is- gerxe~all~
ind~:cated by the ~e~~rera~e ~aumeral- 20' and comprises ~ support means ~1, ~.n endless tran~m~t~sion ~,e~t coa~s~r~xcti,on 22 that is harried by the ~up~oxt means 21 and ~.s arr~ng~d to, move in a cert:~in path relative to the support means 21, a;~d ~ belt ten~3 oner ~f this in~e~ati~n that is generally indicat~d by the r~ferenbe' num~ral 23 for tens3:oning the belt. construction 22 in a manner hereinafter set ~~rth.
FIG. 10 is a Fragmentary cross-sectional view taken on line 10-10 of FIG. 3;
FIG. 11 is a fragmentary view sa~milar_ to FIG. 10 and illustrates the tensioner d'a.sposed in a , tensioning position thereof; and FIG. 12 is a view similar to FIG. 11 and illustrates the tensioner of FIG. 11 applying a tensioning force to a belt construction.
Sest Mode For Carry_in~ out the Invention ~nlhile the various features off' this invention are hereinafter illustrated and described as being particularly adapted to provide a belt tensioner for operating on a belt construction adapted to move in a bertain path, it is to be understood that the various features of -this invention can be utilized singly or in variaus combinations thereof: to p~~ovide a belt ter~sioner ~~r other systems as desired.
Therefor~, this ai.nv~ntion is not to be l~.mited to only the ea~c~bodi~ient i:llbstrated in the draw3.ng~ because the drawi~ags are merely ut~.l~.zed to illustrate cane of the wide variety ~~ uses ~~
thus invention~
Re~erri.ng nor tc~ FIG. ~ ~ the ~n~ea be7tt tensioningt system oi' -this atawent3.or~ is- gerxe~all~
ind~:cated by the ~e~~rera~e ~aumeral- 20' and comprises ~ support means ~1, ~.n endless tran~m~t~sion ~,e~t coa~s~r~xcti,on 22 that is harried by the ~up~oxt means 21 and ~.s arr~ng~d to, move in a cert:~in path relative to the support means 21, a;~d ~ belt ten~3 oner ~f this in~e~ati~n that is generally indicat~d by the r~ferenbe' num~ral 23 for tens3:oning the belt. construction 22 in a manner hereinafter set ~~rth.
The belt tensioner 23 comprises a metallic or plastic arm 24 that is pivotally mounted to the support means 21 in a manner hereinafter set forth and carries a rotatable pulley 25 that has a belt engaging surface 26 disposed in rolling engagement with the side 27 of the belt construction 22. The arm 24 is normally urged in the direction of the arrow 28 in FIG. 12 by the force of a wound coiled spring 29 that has one end 30 thereof operatively interconnected to the support means 21 in a manner hereinafter set forth, and has the other end 31 thereof operatively interconnected to the arm 24.
The wound coiled spring 29 comprises a helically wound flat metallic wire spring means which may have the adjacent coils thereof interleaved with an anti-friction polymeric strip 32 whereby the spring means 29 functions in a manner well known in the art. For example, see the aforementioned U.S. patent to Henderson, No.
4,886,483.
The tensioner 23 of this invention is adapted to be inserted into the support means 21 and to be removed therefrom, with the spring means 29 being carned thereby in a self contained manner. However, the spring means 29 is adapted to have the inner end 30 thereof effectively disconnected from the arm 24 and operatively interconnected to the support means 21 in a manner hereinafter set forth so that the force of the would coiled spring means 29 tends to pivot the arm in the direction of the arrow 28 of FIG. 12 so that the pulley 25 will be urged against the belt .. Wp ~~/ ( fi30n ~ ~ ~ ~ ~ ~ 8 ~ PCT/ LJS931~01257 construction 22 with a force that tensions the belt construction 22 all in a manner and for reasons that are fully set forth in the aforementioned U.
S. patent to Henderson, No. 4,886,483, whereby only the details of the structure of the belt tensioning system 20 and belt tensioner 23 necessary to understand the features of this invention will be hereinafter described.
The support means 21 comprises a supporting structure 33, such as an internal combustion engine (not shown) of a transportation vehicle or the like (not shown), and a metallic or plastic mounting plate or bracket 34 that is fastened to the supporting structure 33 in any suitable manner, such as by the metallic bolts 35, whereby the plate 34 is held fixed to the supporting structure 33.
The plate 34 as illustrated in FIGB. 2 and 6 has a cyl.~.ndrica3 hub 36 that extends outwardly from a side 3~ of the plate 34 and is provided with an internally threaded opening 38 which is adapt~d to receive an externally threaded end 39 of a metall~.c fasten~Lng membex 40 in a manner hereinafter set forth, the fasteniang member 40 having an a~nthread~d ~nlarg~c~ cylindrical shank portion 41 ~ oi,ned to the thr~aded port~:ox~ 39 by a transversely disposed annular flat shoulder 42 whatch is adapted tc~ engage against a flat annular shoulder 43 on the cylindrical hub or part 36 of ..
the support p3:ate 34 as i3.lustrated in FIG. 9 wheneby the fastening member 40 is adapted to fasten the tens~,oner 23 to the plate 34 in ~ manner hereinafter set forth so that the fastening member is fixed frbm movement relati~re to the support 35 means 21.
W~ 9:'~/~10~(10 P~T/US9~101257 _$_ The support plate 34 has an annular wall 44 that extends outwardly from the side 37 of the plate 34 in a concentric manner about the cylindrical hub 36 and has-~ slot 45 formed therein and defining an abutment,means 46 fox' having the end 3Q of the sprang 29 engaged thereagainst in the manner illustrated in ~'1G. 12 to operatively .interconnect the end 30 to the support means 21 as will be apparent hereinafter.
1~ The wall 44 of the support plate 34 has an inner arcuate surface 47 adapted to be telescopically disposed with an outer arcuate surface 48 on a wall 49 of the arm 24 of the belt tensioner 23 in a manner hereinafter set forth.
The support plate 34 ~f the support means 21 has a plurality of spaced apart walls 50, 51 and 52 extending outwardly from the side 37 thereof, with the walls 51 and 52 respectiv~ly def3.xaing surfaces 53 and 54 far respectiv~ly being engagable by surfaces 55 and 56 ~n the ~r~ 24 of the belt tensi~ner 23.
In additi~n, the arm 24 has a shop surface 57 , ~n an ext~~s3.~n, 58 thereof that is adapted to abut agains-~ a st~p surface ~9 on the walk. 5(9 ~f the prate 34 ~.x~ the manner .illustrated in F1G. ~. The surface~s 5~ and 56 are nitial assembly al3.ga~.naent mear~~ and the surfaces 54; 56, 57 and 59 are slightly,aragl~d. the surfaae~ 5? and 59 ire parallel whereas the su~fa~~~ 54 and 56 ax~~
3g ~pposed'in angle such that at initial contact, the surfac~s 54 and 5~ m~~t at one end thereof and at .
final assembly, the surfaces 5~ and 59 mat~ whale the surfaces 54 and 56 are spaced apart.
When the tens.oner 23 is farst mounted to the plate 34 as illustrated 'in 1IG. '7, a suitable W'Q 9~/ ~ ~~~Q ~ ~ P~6'J US93/0 r 2S7 _ g _ tool (not shown) is disposed in a rectangular opening 60 of the extension 5$ by an operator for rotating the arm 24 in the manner illustrated by the arrow 61 in FIG. 8 in order to assemble the belt construction 22 in the system 2~ end permit the pulley 25 to apply its tensioning Force when the tool i.s removed frown the opening 60 all in a manner well known in the art.
The wall 49 of the arm 24 defines a flat shoulder means 62 and a projection 63 that extends beyond the shoulder 62 at one end thereof whereby said projection 63 is disposed remote from a flat surface 64 of the arm 24 and from which a cylindrical wall 65 and an inner cylindrical wall 66 extend as illustrated, the wall 65 having a slot 67 therein that defines an arcuate shoulder means 68 and a projection 69 that extends outwardly beyond the shoulder m~ans 68 at one end thereof.
In this manner, when the wound coiled spring 29 is assembled to the arm 24, the inner end of the spring 29 is adapted to be disp~sed against the shoulder 62 and to be held in place by the projection 63 while the outer end 31 is disposed against ~la~ shou~,der 68 t~ be held therein 25 by the prbj~ction ~9, the spring 29 in such assembled c~aa~33 tion still being ~.n a wound condition thenemf so that the same his' a force t~r~d3.ng t~o unwind the coils 70 theneof in a maraaier well known in the art so that tlhe spring 29 r~n~tains 3~' in its' assernb~ed condition by °the spring force thereof.
The end 30 of the spring 29 is d~.sposed substant~.a~.ly at a right angle relative to the inner coil 71 of the spring 29 and is adapted ..to have part of its surface disposed agaa.nst the i~'VO 93/163Qt) PC'T/US93/01257 2~~93g~
- to -external peripheral surface ?2 of the inner wall 6fi of the arm 24 as illustrated in FIGS. 1~, 11 and 12. , The pulley 25 is adapted to be rotatably mounted on a cylindrical s~i~ft means ?2>°~t the end ?3 of the arm 24 and to be fixed thereto, such as by a threaded fastening member ?4 in a manner well known in the art whereby the pulley 25 is adapted to rotate relative to the arm 24.
The arm 24 is adapted to be rotatably mounted an the unthreaded shank pbrtion 41 of the fastening member 4~ as will be apparent hereinaftear as a cylindrical opening ?5 passes through a central hub portion ?6 of the arm 24 and is adapted to be lined with a cylindrical bushing 7? formed of any suitable antifriction material, such as a polymeric material, that has an enlarged flanged end ?8 adapted to b~ disposed against a sidle ?9 of tha arm 24 as illustrated in FIG.- 9:
24~ In this Inann~x, t:he fastening nnember 40 is adapted -t~ have the cyliaadrical portion 41 thereof disposed in ark c~p~~~.aag 84~ of the cylindrical. portion of ~h~ bushing ?? ~
illustrated in k'IG> 9; and to hare an enlargec7 head 81 thereof compact biaa3.ng mean, such es one o~;
more wavy washers 82 and 83 betwe~h the h~ad 81 anc~
the flange st~uc°tux~ ?8 of th~ bushing ?? sa as' to ~caanpac°~ the same a~g~in~t the sid~ ?9 of the arm 24 when the threaded po~tiox~ 39 of th~ ~~st~ni.ng ~ member '4~ is fully ttxr~aded into the thread~d opena~ng 38 of the plate 34 in the manner .
illustrated in ~'IG. 9: ~n this ma~n:er, the annular shoulder 42 of the fastening memb~r 4~ abuts against the annular shoulder 43 of the projection 36 as illustrated in FIG: 9 whey~by the fastening .. W'~ ~~/lG3ti0 ~'CT/US93/01257 ~~.~~3~~~
- m -member 40 is held from rotation while the arm 24 is adapted to pivot or rotate relative thereto on the bushing 77 and, thus, to pivot relative to the support means 21 even though the force of the biasing means 82 and 83 has axially moved the arm 24 on the fastening member 40 until the surface means of a member 85 engages the Facing surface means of the plate 34 for subsequent sliding movement thereon.
1g However, in order to retain the fastening member 40 in its assembled relation with the arm 24 and spring 29 when the belt tensioner 23 is separate from the support means 21, a retaining member 84, F1G. 3, can be a.nstalled on the end 41 of the fastening member 4~l in its assembled relation with the arm 24 to retain the fastening member 40 thereto, such retainer 84 also being shown in F1G. 9 for purposes of clarity.
In order to enclose the assembl~d spring 29 in the annular wall 65 of the arm 24, the member 85 is additionally utilized as a dust cbver and the same has an annular flange 86 that is snip-fitted over an annular es3ge 87 of the wall 65 ,in the manner ~.l~Lustr~ted i~a F1G< 9, the m~mbe~ 85 having an opening 88 packing therethrough for peg,-~t~,ng the ma~m'ber 85 'too be tel~esc~ped ~rito ;~h.e annular wall 44 of the support plate 34 also as 3,llustrated in FaG. 9. , Thus, it can tae seen that the belt 3g tensioner 23 of this invention can be f~rmed of relatively few parts' by th~ method of this invention to provide a self-contained unit that comprises the arm 24, the pulley 25 and the wound coiled spring 29 which results in a relatively inexpensive belt tensioner through the change in PC'~'/U593/01257 the design thereof over the design of prior known belt tensioners, such as the belt tensioner set forth in the aforementioned U. S. patent to Henderson, No. 4,886,483. , when it is desired to assemb'l.e the belt , tensioner 23 of this invention, in the system 20 which has the support plate 34 previously fastened to the support structure 33 by the bolts 35 in the manner previously set forth, the belt tensioner 23 is assembled thereto in the manner illustrated in FIGS. 7 and 10 whereby the end 30 of the spring 29 is disposed in the slot 45 of the wall 44 and the means 55 and 56 of the arm 24 are disposed between the means 53 and 54 of the plate 34 while the stop surface 5~ of the extension 53 slides past the stop surface 59 of the wall 50 of the plate 34. In addition, the surface 48 of the wall 49 telescopes within the surface 47 of the wall 44 of the support plate 34 and part of tt~e inner coil ~1 of the spr~.r~g 29 slips over the outer peripheral surfade 4'7' of the wall ~44 in the manne~° illustrated in FIG. 10.
I'he fastening member 40 then has its . thr~;~ded portion 39 tk~~readed into the threaded opening 38 of the projection 3b until the annular shoulder 42 of the ~asten3.ng member 40 abuts against the surface 43 of the projection 35 in the maxaner a~3.lustrated yin ,JIG. 9 so that the biasiax means 82 and/or 33 is compacted between the enlarged head 8l ~of the fasten3~ng member 40 and the flange 78 of the bushing T7 so as to compact the flange 73 of 'the bushing 77 against the side "79 of the arm 24 and compact th~ member 85 of the arm 24 aga~.nst the facing surface means of the support plate 34.
~wo ~a~/lhaoo ~ ~ ~ ~ 3 g ~ ~~-rrus~~rc~l~s~
is Tn this manner, the belt tensioner 23 is fully assembled to the support plate 34 and can be disposed in its operative position for tensioning the endless transmission belt construction 22 in a manner now to be described.
Once it is desired to cause the belt tensioner 23 to tension the belt construction 22, an appropriate tool is inserted in the opening 60 of the lug 58 of the arm 24 and is then utilised to rotate the arm 24 in the clockwise direction as represented by the arrow 61 in ~'TG. 8 to cause the end 30 of the spring 29 to have its side 30' be placed against the abutmewt 46 of the wall 44 of the plate 34 as the shoulder 62 of the rotating arm 24 moves out of engagement with the surface 30' of the end 30 of the spring 29 so that the end 30 of the spring 29 is now opera°9avely interconnected to the support means 21, such rotation of th~ arm 24 in the clockwise direction as illustrated in X10$
8 and 11 by the arrow 61 cGeusing the end 31 of the spring 29 to be moved in a direction to further wind up the spring 29. In this manner, when the side 2~ of . the b~lt 22 is placed agair~st the surface 26 of the' g~ull.ey 25 in th~ manner illustrated in ~1G8. 1~ 8 and 12, the force of tie spring 29 fending to unwind the spring 29 is now applied ag~~.nst tae sid~ 2T of the belt construction 22 as repress~nted by the arrow 28 in F1G. 1.2 to tensi~n the belt construction 22 in a manner well known in the art. Such tensioning position of the belt tensioner 23 has.the arm 2~
with its surfaces 55 and 56 disposed intermediate the surfaces 53 and 54 on the support plate 34 as illustrated in flG. 12.
When it is desired to remove the belt wo ~~il~~oo ~c7rms~~ioms~
tensioner 23 from the support plate 34, the belt construction 22 is removed from contact with the pulley 25 and the arm 24 is permitted to move in a counterclockwise direction until the stop surface 57 thereof engages against the stop su~~ ce 59 of the plate 34, at which time the shoulder 62 of the rotating arm 24 now comes into engagement with the surface 30' of the end 30 of the spring 29 and, in effect, removes the surface 30' of the end 30 of the spring 29 from the abutment 46 of the plate 34 so that the end 30 of the spring 29 is no longer operatively interconnected to the support at~eans 21.
At this timer the fasten:Lng member 40 can be removed from the threaded opening 33 of the support plate 34 and the belt tensi.oner 23 can be reanoved as a self-contained unit frown the plate 34 as the spring 29 is car~°aed thereby.
Thus, another belt tensioner 23 of this invention can now be utilized with the plate 34 in the manner previously set forth should the reason for having remov~d the previous belt tensioner 23 be to replace the same.
Tn.any event, it can be seen that this invention not only provides a new belt tensioning system and a new belt tendoner therefor; but also this invention provides new anethods of makialg such a new belt tensioning system and such a new belt tensioner.
~Thile the forms and methods of this ' invention row pr~f~rx°ed have been illustrated °and described as required, it is to be understood that other forms and method steps can be uti~.ixed axed stall fall within the scope of the appended. claims, wherein each claim sets forth what is believed to be known in each claim prior to this invention in ' WC) 93/ 1 G3U0 _ ~ ~ ~ IPC'T/ US93/01257 the portion of each claim that is disposed before the terms "the improvement", and sets forth what is believed to be neca in each claim according to this invention in the portion of each claim that is disposed after the terms "the improvemdn°t", whereby it is believed that each claim sets forth a novel, useful and unobvious invention.
The wound coiled spring 29 comprises a helically wound flat metallic wire spring means which may have the adjacent coils thereof interleaved with an anti-friction polymeric strip 32 whereby the spring means 29 functions in a manner well known in the art. For example, see the aforementioned U.S. patent to Henderson, No.
4,886,483.
The tensioner 23 of this invention is adapted to be inserted into the support means 21 and to be removed therefrom, with the spring means 29 being carned thereby in a self contained manner. However, the spring means 29 is adapted to have the inner end 30 thereof effectively disconnected from the arm 24 and operatively interconnected to the support means 21 in a manner hereinafter set forth so that the force of the would coiled spring means 29 tends to pivot the arm in the direction of the arrow 28 of FIG. 12 so that the pulley 25 will be urged against the belt .. Wp ~~/ ( fi30n ~ ~ ~ ~ ~ ~ 8 ~ PCT/ LJS931~01257 construction 22 with a force that tensions the belt construction 22 all in a manner and for reasons that are fully set forth in the aforementioned U.
S. patent to Henderson, No. 4,886,483, whereby only the details of the structure of the belt tensioning system 20 and belt tensioner 23 necessary to understand the features of this invention will be hereinafter described.
The support means 21 comprises a supporting structure 33, such as an internal combustion engine (not shown) of a transportation vehicle or the like (not shown), and a metallic or plastic mounting plate or bracket 34 that is fastened to the supporting structure 33 in any suitable manner, such as by the metallic bolts 35, whereby the plate 34 is held fixed to the supporting structure 33.
The plate 34 as illustrated in FIGB. 2 and 6 has a cyl.~.ndrica3 hub 36 that extends outwardly from a side 3~ of the plate 34 and is provided with an internally threaded opening 38 which is adapt~d to receive an externally threaded end 39 of a metall~.c fasten~Lng membex 40 in a manner hereinafter set forth, the fasteniang member 40 having an a~nthread~d ~nlarg~c~ cylindrical shank portion 41 ~ oi,ned to the thr~aded port~:ox~ 39 by a transversely disposed annular flat shoulder 42 whatch is adapted tc~ engage against a flat annular shoulder 43 on the cylindrical hub or part 36 of ..
the support p3:ate 34 as i3.lustrated in FIG. 9 wheneby the fastening member 40 is adapted to fasten the tens~,oner 23 to the plate 34 in ~ manner hereinafter set forth so that the fastening member is fixed frbm movement relati~re to the support 35 means 21.
W~ 9:'~/~10~(10 P~T/US9~101257 _$_ The support plate 34 has an annular wall 44 that extends outwardly from the side 37 of the plate 34 in a concentric manner about the cylindrical hub 36 and has-~ slot 45 formed therein and defining an abutment,means 46 fox' having the end 3Q of the sprang 29 engaged thereagainst in the manner illustrated in ~'1G. 12 to operatively .interconnect the end 30 to the support means 21 as will be apparent hereinafter.
1~ The wall 44 of the support plate 34 has an inner arcuate surface 47 adapted to be telescopically disposed with an outer arcuate surface 48 on a wall 49 of the arm 24 of the belt tensioner 23 in a manner hereinafter set forth.
The support plate 34 ~f the support means 21 has a plurality of spaced apart walls 50, 51 and 52 extending outwardly from the side 37 thereof, with the walls 51 and 52 respectiv~ly def3.xaing surfaces 53 and 54 far respectiv~ly being engagable by surfaces 55 and 56 ~n the ~r~ 24 of the belt tensi~ner 23.
In additi~n, the arm 24 has a shop surface 57 , ~n an ext~~s3.~n, 58 thereof that is adapted to abut agains-~ a st~p surface ~9 on the walk. 5(9 ~f the prate 34 ~.x~ the manner .illustrated in F1G. ~. The surface~s 5~ and 56 are nitial assembly al3.ga~.naent mear~~ and the surfaces 54; 56, 57 and 59 are slightly,aragl~d. the surfaae~ 5? and 59 ire parallel whereas the su~fa~~~ 54 and 56 ax~~
3g ~pposed'in angle such that at initial contact, the surfac~s 54 and 5~ m~~t at one end thereof and at .
final assembly, the surfaces 5~ and 59 mat~ whale the surfaces 54 and 56 are spaced apart.
When the tens.oner 23 is farst mounted to the plate 34 as illustrated 'in 1IG. '7, a suitable W'Q 9~/ ~ ~~~Q ~ ~ P~6'J US93/0 r 2S7 _ g _ tool (not shown) is disposed in a rectangular opening 60 of the extension 5$ by an operator for rotating the arm 24 in the manner illustrated by the arrow 61 in FIG. 8 in order to assemble the belt construction 22 in the system 2~ end permit the pulley 25 to apply its tensioning Force when the tool i.s removed frown the opening 60 all in a manner well known in the art.
The wall 49 of the arm 24 defines a flat shoulder means 62 and a projection 63 that extends beyond the shoulder 62 at one end thereof whereby said projection 63 is disposed remote from a flat surface 64 of the arm 24 and from which a cylindrical wall 65 and an inner cylindrical wall 66 extend as illustrated, the wall 65 having a slot 67 therein that defines an arcuate shoulder means 68 and a projection 69 that extends outwardly beyond the shoulder m~ans 68 at one end thereof.
In this manner, when the wound coiled spring 29 is assembled to the arm 24, the inner end of the spring 29 is adapted to be disp~sed against the shoulder 62 and to be held in place by the projection 63 while the outer end 31 is disposed against ~la~ shou~,der 68 t~ be held therein 25 by the prbj~ction ~9, the spring 29 in such assembled c~aa~33 tion still being ~.n a wound condition thenemf so that the same his' a force t~r~d3.ng t~o unwind the coils 70 theneof in a maraaier well known in the art so that tlhe spring 29 r~n~tains 3~' in its' assernb~ed condition by °the spring force thereof.
The end 30 of the spring 29 is d~.sposed substant~.a~.ly at a right angle relative to the inner coil 71 of the spring 29 and is adapted ..to have part of its surface disposed agaa.nst the i~'VO 93/163Qt) PC'T/US93/01257 2~~93g~
- to -external peripheral surface ?2 of the inner wall 6fi of the arm 24 as illustrated in FIGS. 1~, 11 and 12. , The pulley 25 is adapted to be rotatably mounted on a cylindrical s~i~ft means ?2>°~t the end ?3 of the arm 24 and to be fixed thereto, such as by a threaded fastening member ?4 in a manner well known in the art whereby the pulley 25 is adapted to rotate relative to the arm 24.
The arm 24 is adapted to be rotatably mounted an the unthreaded shank pbrtion 41 of the fastening member 4~ as will be apparent hereinaftear as a cylindrical opening ?5 passes through a central hub portion ?6 of the arm 24 and is adapted to be lined with a cylindrical bushing 7? formed of any suitable antifriction material, such as a polymeric material, that has an enlarged flanged end ?8 adapted to b~ disposed against a sidle ?9 of tha arm 24 as illustrated in FIG.- 9:
24~ In this Inann~x, t:he fastening nnember 40 is adapted -t~ have the cyliaadrical portion 41 thereof disposed in ark c~p~~~.aag 84~ of the cylindrical. portion of ~h~ bushing ?? ~
illustrated in k'IG> 9; and to hare an enlargec7 head 81 thereof compact biaa3.ng mean, such es one o~;
more wavy washers 82 and 83 betwe~h the h~ad 81 anc~
the flange st~uc°tux~ ?8 of th~ bushing ?? sa as' to ~caanpac°~ the same a~g~in~t the sid~ ?9 of the arm 24 when the threaded po~tiox~ 39 of th~ ~~st~ni.ng ~ member '4~ is fully ttxr~aded into the thread~d opena~ng 38 of the plate 34 in the manner .
illustrated in ~'IG. 9: ~n this ma~n:er, the annular shoulder 42 of the fastening memb~r 4~ abuts against the annular shoulder 43 of the projection 36 as illustrated in FIG: 9 whey~by the fastening .. W'~ ~~/lG3ti0 ~'CT/US93/01257 ~~.~~3~~~
- m -member 40 is held from rotation while the arm 24 is adapted to pivot or rotate relative thereto on the bushing 77 and, thus, to pivot relative to the support means 21 even though the force of the biasing means 82 and 83 has axially moved the arm 24 on the fastening member 40 until the surface means of a member 85 engages the Facing surface means of the plate 34 for subsequent sliding movement thereon.
1g However, in order to retain the fastening member 40 in its assembled relation with the arm 24 and spring 29 when the belt tensioner 23 is separate from the support means 21, a retaining member 84, F1G. 3, can be a.nstalled on the end 41 of the fastening member 4~l in its assembled relation with the arm 24 to retain the fastening member 40 thereto, such retainer 84 also being shown in F1G. 9 for purposes of clarity.
In order to enclose the assembl~d spring 29 in the annular wall 65 of the arm 24, the member 85 is additionally utilized as a dust cbver and the same has an annular flange 86 that is snip-fitted over an annular es3ge 87 of the wall 65 ,in the manner ~.l~Lustr~ted i~a F1G< 9, the m~mbe~ 85 having an opening 88 packing therethrough for peg,-~t~,ng the ma~m'ber 85 'too be tel~esc~ped ~rito ;~h.e annular wall 44 of the support plate 34 also as 3,llustrated in FaG. 9. , Thus, it can tae seen that the belt 3g tensioner 23 of this invention can be f~rmed of relatively few parts' by th~ method of this invention to provide a self-contained unit that comprises the arm 24, the pulley 25 and the wound coiled spring 29 which results in a relatively inexpensive belt tensioner through the change in PC'~'/U593/01257 the design thereof over the design of prior known belt tensioners, such as the belt tensioner set forth in the aforementioned U. S. patent to Henderson, No. 4,886,483. , when it is desired to assemb'l.e the belt , tensioner 23 of this invention, in the system 20 which has the support plate 34 previously fastened to the support structure 33 by the bolts 35 in the manner previously set forth, the belt tensioner 23 is assembled thereto in the manner illustrated in FIGS. 7 and 10 whereby the end 30 of the spring 29 is disposed in the slot 45 of the wall 44 and the means 55 and 56 of the arm 24 are disposed between the means 53 and 54 of the plate 34 while the stop surface 5~ of the extension 53 slides past the stop surface 59 of the wall 50 of the plate 34. In addition, the surface 48 of the wall 49 telescopes within the surface 47 of the wall 44 of the support plate 34 and part of tt~e inner coil ~1 of the spr~.r~g 29 slips over the outer peripheral surfade 4'7' of the wall ~44 in the manne~° illustrated in FIG. 10.
I'he fastening member 40 then has its . thr~;~ded portion 39 tk~~readed into the threaded opening 38 of the projection 3b until the annular shoulder 42 of the ~asten3.ng member 40 abuts against the surface 43 of the projection 35 in the maxaner a~3.lustrated yin ,JIG. 9 so that the biasiax means 82 and/or 33 is compacted between the enlarged head 8l ~of the fasten3~ng member 40 and the flange 78 of the bushing T7 so as to compact the flange 73 of 'the bushing 77 against the side "79 of the arm 24 and compact th~ member 85 of the arm 24 aga~.nst the facing surface means of the support plate 34.
~wo ~a~/lhaoo ~ ~ ~ ~ 3 g ~ ~~-rrus~~rc~l~s~
is Tn this manner, the belt tensioner 23 is fully assembled to the support plate 34 and can be disposed in its operative position for tensioning the endless transmission belt construction 22 in a manner now to be described.
Once it is desired to cause the belt tensioner 23 to tension the belt construction 22, an appropriate tool is inserted in the opening 60 of the lug 58 of the arm 24 and is then utilised to rotate the arm 24 in the clockwise direction as represented by the arrow 61 in ~'TG. 8 to cause the end 30 of the spring 29 to have its side 30' be placed against the abutmewt 46 of the wall 44 of the plate 34 as the shoulder 62 of the rotating arm 24 moves out of engagement with the surface 30' of the end 30 of the spring 29 so that the end 30 of the spring 29 is now opera°9avely interconnected to the support means 21, such rotation of th~ arm 24 in the clockwise direction as illustrated in X10$
8 and 11 by the arrow 61 cGeusing the end 31 of the spring 29 to be moved in a direction to further wind up the spring 29. In this manner, when the side 2~ of . the b~lt 22 is placed agair~st the surface 26 of the' g~ull.ey 25 in th~ manner illustrated in ~1G8. 1~ 8 and 12, the force of tie spring 29 fending to unwind the spring 29 is now applied ag~~.nst tae sid~ 2T of the belt construction 22 as repress~nted by the arrow 28 in F1G. 1.2 to tensi~n the belt construction 22 in a manner well known in the art. Such tensioning position of the belt tensioner 23 has.the arm 2~
with its surfaces 55 and 56 disposed intermediate the surfaces 53 and 54 on the support plate 34 as illustrated in flG. 12.
When it is desired to remove the belt wo ~~il~~oo ~c7rms~~ioms~
tensioner 23 from the support plate 34, the belt construction 22 is removed from contact with the pulley 25 and the arm 24 is permitted to move in a counterclockwise direction until the stop surface 57 thereof engages against the stop su~~ ce 59 of the plate 34, at which time the shoulder 62 of the rotating arm 24 now comes into engagement with the surface 30' of the end 30 of the spring 29 and, in effect, removes the surface 30' of the end 30 of the spring 29 from the abutment 46 of the plate 34 so that the end 30 of the spring 29 is no longer operatively interconnected to the support at~eans 21.
At this timer the fasten:Lng member 40 can be removed from the threaded opening 33 of the support plate 34 and the belt tensi.oner 23 can be reanoved as a self-contained unit frown the plate 34 as the spring 29 is car~°aed thereby.
Thus, another belt tensioner 23 of this invention can now be utilized with the plate 34 in the manner previously set forth should the reason for having remov~d the previous belt tensioner 23 be to replace the same.
Tn.any event, it can be seen that this invention not only provides a new belt tensioning system and a new belt tendoner therefor; but also this invention provides new anethods of makialg such a new belt tensioning system and such a new belt tensioner.
~Thile the forms and methods of this ' invention row pr~f~rx°ed have been illustrated °and described as required, it is to be understood that other forms and method steps can be uti~.ixed axed stall fall within the scope of the appended. claims, wherein each claim sets forth what is believed to be known in each claim prior to this invention in ' WC) 93/ 1 G3U0 _ ~ ~ ~ IPC'T/ US93/01257 the portion of each claim that is disposed before the terms "the improvement", and sets forth what is believed to be neca in each claim according to this invention in the portion of each claim that is disposed after the terms "the improvemdn°t", whereby it is believed that each claim sets forth a novel, useful and unobvious invention.
Claims (20)
1. In a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction carried by said support means and arranged to move in a certain path relative to said support means, an arm pivotally mounted to said support means, a pulley rotatably carried by said arm and being in engagement with said belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to said abutment means of said support means and the other of which is operatively interconnected to said arm whereby the force of said wound coiled spring tends to pivot said arm in a direction that urges said pulley against said belt construction with a force that tensions said belt construction, the improvement wherein said arm has a shoulder means for being engaged by said one of said opposed ends of said wound coiled spring by the force of said wound coiled spring so as to permit removal of said arm and said wound coiled spring as a self contained unit from said support means when said arm is pivoted to a certain position where said shoulder means of said arm engages said one end of wound coiled spring and effectively moves said one end of said wound coiled spring out of contact with said abutment means of said support means.
2. A belt tensioning system as set forth in claim 1 wherein said wound coiled spring comprises a substantially flat wire helical spring wherein said opposed ends thereof comprise an inner end and an outer end.
3. A belt tensioning system as set forth in claim 2 wherein said one end of said wound coiled spring comprises said inner end thereof.
4. A belt tensioning system as set forth in claim 1, 2 or 3 wherein said support means has a pair of spaced apart stop means respectively engageable by said arm to limit pivotal movement of said arm in each pivoting direction of movement thereof.
5. A belt tensioning system as set forth in claim 4 wherein said arm is disposed closely adjacent one of said stop means when said arm is in said certain position thereof.
6. A belt tensioning system as set forth in any one of claims 1 to 5 wherein said support means has a cylindrical hub extending outwardly therefrom, said arm having surface means disposed for movement relative to said hub.
7. A belt tensioning system as set forth in any one of claims 1 to 6 wherein said support means has an opening therein, and a fastening member rotatably carried by said arm and being disposed into said opening so as to fasten said arm to said support means.
8. A belt tensioning system as set forth in claim 7 wherein said arm is rotatably disposed on said fastening member.
9. A belt tensioning system as set forth in claim 8 and comprising a bushing disposed between said fastening member and said arm to facilitate rotational movement therebetween.
10. A belt tensioning system as set forth in claim 9 wherein said bushing has an annular flange engaging said arm, said fastening member having an enlarged head compacting said annular flange against said arm.
11. In a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction carried by said support means and arranged to move in a certain path relative to said support means, said tensioner comprising an arm adapted to be pivotally mounted to said support means, a pulley rotatably carried by said arm and being adapted to be in engagement with said belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to said abutment means of said support means and the other of which is operatively interconnected to said arm whereby the force of said wound coiled spring is adapted to pivot said arm in a direction that urges said pulley against said belt construction with a force that tensions said belt construction, the improvement wherein said arm has a shoulder means that is engaged by said one of said opposed ends of said wound coiled spring by the force of said wound coiled spring so as to permit insertion and removal of said arm and said wound coiled spring as a self contained unit to and from said support means when said arm is pivoted to a certain position where said shoulder means of said arm engages said one end of said wound coiled spring and effectively holds said one end of said wound coiled spring out of contact with said abutment means of said support means.
12. A belt tensioner as set forth in claim 11 wherein said wound coiled spring comprises a substantially flat wire helical spring wherein said opposed ends thereof comprise an inner end and an outer end.
13. A belt tensioner as set forth in claim 12 wherein said one end of said wound coiled spring comprises said inner end thereof.
14. A belt tensioner as set forth in claim 11, 12 or 13 wherein said arm has surface means adapted to be disposed for movement relative to a cylindrical hub of said support means.
15. A belt tensioner as set forth in claim 11 and comprising a fastening member rotatably carried by said arm and being adapted to be disposed into an opening of said support means so as to fasten said arm to said support means.
16. A belt tensioner as set forth in claim 15 wherein said arm is rotatably disposed on said fastening member.
17. A belt tensioning system as set forth in claim 16 and comprising a bushing disposed between said fastening member and said arm to facilitate rotational movement therebetween.
18. A belt tensioner as set forth in claim 17 wherein said bushing has an annular flange engaging said arm, said fastening member having an enlarged head for compacting said annular flange against said arm.
19. In a method of making a belt tensioning system comprising a support means having an abutment means, an endless transmission belt construction carried by said support means and arranged to move in a certain path relative to said support means, an arm pivotally mounted to said support means, a pulley rotatably earned by said arm and being in engagement with said belt construction, and a wound coiled spring having opposed ends one of which is operatively interconnected to said abutment means of said support means and the other of which is operatively interconnected to said arm whereby the force of said wound coiled spring tends to pivot said arm in a direction that urges said pulley against said belt construction with a force that tensions said belt construction, the improvement comprising the step of forming said arm to have a shoulder means for being engaged by said one of said opposed ends of said wound coiled spring by the force of said wound coiled spring so as to permit removal of said arm and said wound coiled spring as a self contained unit from said support means when said arm is pivoted to a certain position where said shoulder means of said arm engages said one end of said wound coiled spring and effectively moves said one end of said wound coiled spring out of contact with said abutment means of said support means.
20. In a method of making a belt tensioner for a belt tensioning system that comprises a support means having an abutment means and an endless transmission belt construction earned by said support means and arranged to move in a certain path relative to said support means, said tensioner comprising an arm adapted to be pivotally mounted to said support means, a pulley rotatably carried by said arm and being adapted to be in engagement with said belt construction, and a wound coiled spring having opposed ends one of which is adapted to be operatively interconnected to said abutment means of said support means and the other of which is operatively interconnected to said arm whereby the force of said wound coiled spring is adapted to pivot said arm in a direction that urges said pulley against said belt construction with a force that tensions said belt construction, the improvement comprising the step of forming said arm to have a shoulder means that is engaged by said one of said opposed ends of said wound coiled spring by the force of said wound coiled spring so as to permit insertion and removal of said arm and said wound coiled spring as a self-contained unit to and from said support means when said arm is pivoted to a certain position where said shoulder means of said arm engages said one end of said wound coiled spring and effectively holds said one end of said wound coiled spring out of contact with said abutment means of said support means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/832,297 US5190502A (en) | 1992-02-07 | 1992-02-07 | Belt tensioning system, belt tensioner therefor and methods of making the same |
| US832,297 | 1992-02-07 | ||
| PCT/US1993/001257 WO1993016300A1 (en) | 1992-02-07 | 1993-01-29 | Belt tensioning system, belt tensioner therefor and methods of making the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2129384A1 CA2129384A1 (en) | 1993-08-19 |
| CA2129384C true CA2129384C (en) | 2004-01-20 |
Family
ID=25261265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002129384A Expired - Fee Related CA2129384C (en) | 1992-02-07 | 1993-01-29 | Belt tensioning system, belt tensioner therefor and methods of making the same |
Country Status (10)
| Country | Link |
|---|---|
| US (5) | US5190502A (en) |
| EP (1) | EP0624231B1 (en) |
| JP (1) | JP3271010B2 (en) |
| AT (1) | ATE152221T1 (en) |
| AU (1) | AU659540B2 (en) |
| CA (1) | CA2129384C (en) |
| DE (2) | DE69310146T2 (en) |
| ES (1) | ES2065866T3 (en) |
| MX (1) | MX9300604A (en) |
| WO (1) | WO1993016300A1 (en) |
Families Citing this family (50)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277666A (en) * | 1991-10-21 | 1994-01-11 | Kumm Industries, Inc. | Belt tensioner |
| US5254048A (en) * | 1992-02-07 | 1993-10-19 | Dayco Products, Inc. | Belt tensioning system, belt tensioner therefor and methods of making the same |
| US5190502A (en) * | 1992-02-07 | 1993-03-02 | Dayco Products, Inc. | Belt tensioning system, belt tensioner therefor and methods of making the same |
| US5277667A (en) * | 1992-09-18 | 1994-01-11 | Dayco Products, Inc. | Belt tensioning system and method of making |
| US5348514A (en) * | 1993-09-21 | 1994-09-20 | Dayco Products, Inc. | Belt tensioner, components therefor and methods of making the same |
| US5718649A (en) * | 1996-02-16 | 1998-02-17 | Dayco Products, Inc. | Tensioner for a power transmission belt and method of making same |
| ES2152695T3 (en) * | 1996-08-21 | 2001-02-01 | Tesma Int Inc | BELT TENSIONER FOR CAR. |
| DE19954481A1 (en) | 1999-11-12 | 2001-05-23 | Porsche Ag | Chain guide for a control shaft drive of an internal combustion engine and method for producing a chain guide |
| US6582332B2 (en) * | 2000-01-12 | 2003-06-24 | The Gates Corporation | Damping mechanism for a tensioner |
| DE10155826A1 (en) * | 2001-11-14 | 2003-05-15 | Ina Schaeffler Kg | jig |
| US7163478B2 (en) * | 2001-12-12 | 2007-01-16 | Dayco Products, Llc | Belt tensioner having an automatically adjustable travel stop |
| US6689001B2 (en) * | 2001-12-12 | 2004-02-10 | Dayco Products, Llc | Adaptive belt tensioner system for control of reversible torque load pulley |
| US7229374B2 (en) * | 2001-12-20 | 2007-06-12 | Dayco Products, Llc | Dual friction surface asymmetric damped tensioner |
| US6863631B2 (en) | 2001-12-20 | 2005-03-08 | Dayco Products, Llc | Unidirectional motion asymmetric damped tensioner |
| US7118504B2 (en) * | 2002-02-07 | 2006-10-10 | Dayco Products, Llc | Hydraulic asymmetric damped belt tensioner |
| US6884194B2 (en) | 2002-02-07 | 2005-04-26 | Dayco Products, Llc | Hydraulic asymmetric damped belt tensioner |
| US6682452B2 (en) | 2002-02-14 | 2004-01-27 | Dayco Products, Llc | Belt tensioner with pivot bushing |
| US7186196B2 (en) * | 2002-07-18 | 2007-03-06 | Dayco Products, Llc | Belt tensioner with integral damping |
| US6855079B2 (en) * | 2002-09-30 | 2005-02-15 | Fenner, Inc. | Bi-directional belt tensioner |
| US7837582B2 (en) * | 2002-09-30 | 2010-11-23 | Fenner, Inc. | Bi-directional belt tensioner |
| US7883436B2 (en) * | 2004-09-15 | 2011-02-08 | Fenner U.S., Inc. | Bi-directional tensioner |
| ITTO20021133A1 (en) * | 2002-12-30 | 2004-06-30 | Dayco Europe Srl | TWO-ARM TENSIONER FOR A BELT DRIVE. |
| US7090606B2 (en) * | 2003-07-03 | 2006-08-15 | The Gates Corporation | Adjustable tensioner |
| WO2005022001A1 (en) * | 2003-08-21 | 2005-03-10 | The Gates Corporation | Tensioner |
| US7371199B2 (en) * | 2003-09-13 | 2008-05-13 | Dayco Products, Llc | One-way clutched damper for automatic belt tensioner |
| US7637829B2 (en) * | 2004-09-29 | 2009-12-29 | The Gates Corporation | Eccentric pivot arm tensioner |
| WO2006105656A1 (en) * | 2005-04-08 | 2006-10-12 | Litens Automotive Partnership | Tensioner with molded arm |
| ATE502233T1 (en) * | 2005-04-20 | 2011-04-15 | Dayco Europe Srl | TENSIONING DEVICE FOR A BELT DRIVE WORKING IN THE PRESENCE OF OIL |
| US20080119310A1 (en) * | 2006-11-16 | 2008-05-22 | Holcombe C Scott | Rotary tensioner |
| US20080171622A1 (en) * | 2007-01-16 | 2008-07-17 | Holger Schever | Flatband torsion spring and tensioner |
| JP4930281B2 (en) * | 2007-08-23 | 2012-05-16 | マツダ株式会社 | Belt tensioner and belt replacement method in belt tensioner |
| US8403780B2 (en) * | 2007-12-21 | 2013-03-26 | The Gates Corporation | Tensioner |
| US8784244B2 (en) * | 2008-04-30 | 2014-07-22 | Dayco Ip Holdings, Llc | Pulley with asymmetric torque-sensitive clutching |
| US8529387B2 (en) * | 2008-04-30 | 2013-09-10 | Dayco Ip Holdings, Llc | Pulley with asymmetric torque-sensitive clutching |
| US7931552B2 (en) * | 2008-04-30 | 2011-04-26 | Dayco Products, Llc | Pulley with torque-sensitive clutching |
| US20100261564A1 (en) * | 2009-04-13 | 2010-10-14 | Hughes Thomas E | Rotary tensioner |
| US8979686B2 (en) * | 2009-09-24 | 2015-03-17 | Dayco Ip Holdings, Llc | Cap retainer and a pulley assembly including the cap retainer and method of assembly |
| US8888627B2 (en) | 2010-05-25 | 2014-11-18 | Dayco Ip Holdings, Llc | One-way damped over-arm tensioner |
| US20110294614A1 (en) * | 2010-06-01 | 2011-12-01 | Bigler Jeremy M | Belt tensioning system |
| FR2987411B1 (en) * | 2012-02-27 | 2014-09-12 | Skf Ab | TENSIONING DEVICE OF A TRACTION ELEMENT AND METHOD OF MOUNTING SUCH A DEVICE |
| US10203025B2 (en) * | 2014-02-28 | 2019-02-12 | Dayco Ip Holdings, Llc | Belt tensioner with supplemental force element |
| DE102014206716A1 (en) * | 2014-04-08 | 2015-10-08 | Muhr Und Bender Kg | Belt tensioner |
| US9458920B2 (en) | 2014-05-02 | 2016-10-04 | Dayco Ip Holdings, Llc | Reusable dust cap for a pulley assembly |
| EP2955414A1 (en) * | 2014-06-13 | 2015-12-16 | Aktiebolaget SKF | Tensioning device and method for assembling such a tensioning device |
| DE102015115750A1 (en) * | 2015-09-17 | 2017-03-23 | Muhr Und Bender Kg | Belt tensioner |
| US10753436B2 (en) * | 2018-06-20 | 2020-08-25 | Gates Corporation | Tensioner |
| JP6948992B2 (en) | 2018-08-01 | 2021-10-13 | 日本発條株式会社 | Tensioner |
| US20220099165A1 (en) * | 2020-09-28 | 2022-03-31 | Caterpillar Inc. | Engine accessory drive system and one-piece bracket for same |
| EP4298360A4 (en) * | 2021-02-26 | 2025-01-01 | Dayco IP Holdings, LLC | LARGE OFFSET BELT TENSIONER WITH BALANCING TORSION SPRING FORCE |
| CN120548406A (en) * | 2023-01-20 | 2025-08-26 | 慕威科有限责任公司 | Belt tensioner with integrated idler pulley for an endless drive belt of an engine |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2988469A (en) * | 1959-12-22 | 1961-06-13 | American Viscose Corp | Method for the production of reticulated webs |
| NL279172A (en) * | 1961-06-02 | |||
| US3849241A (en) * | 1968-12-23 | 1974-11-19 | Exxon Research Engineering Co | Non-woven mats by melt blowing |
| US3755527A (en) * | 1969-10-09 | 1973-08-28 | Exxon Research Engineering Co | Process for producing melt blown nonwoven synthetic polymer mat having high tear resistance |
| US3972759A (en) * | 1972-06-29 | 1976-08-03 | Exxon Research And Engineering Company | Battery separators made from polymeric fibers |
| US3825380A (en) * | 1972-07-07 | 1974-07-23 | Exxon Research Engineering Co | Melt-blowing die for producing nonwoven mats |
| US4018646A (en) * | 1973-05-09 | 1977-04-19 | Johnson & Johnson | Nonwoven fabric |
| US3888610A (en) * | 1973-08-24 | 1975-06-10 | Rothmans Of Pall Mall | Formation of polymeric fibres |
| US4032688A (en) * | 1973-08-31 | 1977-06-28 | Pall Corporation | Seamless tubular nonwoven webs and filters thereof |
| US4011067A (en) * | 1974-01-30 | 1977-03-08 | Minnesota Mining And Manufacturing Company | Filter medium layered between supporting layers |
| US4100324A (en) * | 1974-03-26 | 1978-07-11 | Kimberly-Clark Corporation | Nonwoven fabric and method of producing same |
| US4181513A (en) * | 1974-11-05 | 1980-01-01 | Toyobo Co., Ltd. | Carbon adsorptive filter material with layers of reinforcing non woven fabrics needle punched |
| IL51212A (en) * | 1976-01-14 | 1980-03-31 | Pall Corp | Filter elements and process for their continuous production by laydown of thermoplastic fibers on a preformed core to form a nonwoven cylindrical web |
| US4215682A (en) * | 1978-02-06 | 1980-08-05 | Minnesota Mining And Manufacturing Company | Melt-blown fibrous electrets |
| US4211661A (en) * | 1979-01-08 | 1980-07-08 | Chave & Earley, Inc. | Filter medium |
| US4375718A (en) * | 1981-03-12 | 1983-03-08 | Surgikos, Inc. | Method of making fibrous electrets |
| US4431545A (en) * | 1982-05-07 | 1984-02-14 | Pall Corporation | Microporous filter system and process |
| US4526733A (en) * | 1982-11-17 | 1985-07-02 | Kimberly-Clark Corporation | Meltblown die and method |
| US4824451A (en) * | 1985-12-31 | 1989-04-25 | Kimberly-Clark Corporation | Melt-blown filter medium |
| US4886483A (en) * | 1988-11-23 | 1989-12-12 | Dayco Products, Inc. | Belt tensioner and method of making the same |
| US5030171A (en) * | 1989-07-07 | 1991-07-09 | Dayco Products, Inc. | Belt tensioner and method of making the same |
| US5030172A (en) * | 1989-09-06 | 1991-07-09 | Dayco Products, Inc. | Belt tensioner and method of making the same |
| US5057059A (en) * | 1989-12-13 | 1991-10-15 | Dayco Products, Inc. | Belt tensioner and method of making the same |
| US5035679A (en) * | 1990-04-24 | 1991-07-30 | Dayco Products, Inc. | Belt tensioner and method of making the same |
| US5141475A (en) * | 1990-09-26 | 1992-08-25 | Gates Power Drive Products, Inc. | Belt tensioning method |
| US5083984A (en) * | 1991-02-27 | 1992-01-28 | Dayco Products, Inc. | Tensioner for a power transmission belt and method of making the same |
| US5129864A (en) * | 1991-02-27 | 1992-07-14 | Dayco Products, Inc. | Tensioner for a power transmission belt and method of making the same |
| US5190502A (en) * | 1992-02-07 | 1993-03-02 | Dayco Products, Inc. | Belt tensioning system, belt tensioner therefor and methods of making the same |
| US5254048A (en) * | 1992-02-07 | 1993-10-19 | Dayco Products, Inc. | Belt tensioning system, belt tensioner therefor and methods of making the same |
| US5256113A (en) * | 1992-04-29 | 1993-10-26 | Ford Motor Company | Automotive accessory drive belt tensioner |
| US5277667A (en) * | 1992-09-18 | 1994-01-11 | Dayco Products, Inc. | Belt tensioning system and method of making |
-
1992
- 1992-02-07 US US07/832,297 patent/US5190502A/en not_active Expired - Lifetime
-
1993
- 1993-01-29 DE DE69310146T patent/DE69310146T2/en not_active Expired - Fee Related
- 1993-01-29 WO PCT/US1993/001257 patent/WO1993016300A1/en not_active Ceased
- 1993-01-29 CA CA002129384A patent/CA2129384C/en not_active Expired - Fee Related
- 1993-01-29 JP JP51429493A patent/JP3271010B2/en not_active Expired - Fee Related
- 1993-01-29 AU AU36176/93A patent/AU659540B2/en not_active Ceased
- 1993-01-29 AT AT93905029T patent/ATE152221T1/en not_active IP Right Cessation
- 1993-01-29 ES ES93905029T patent/ES2065866T3/en not_active Expired - Lifetime
- 1993-01-29 EP EP93905029A patent/EP0624231B1/en not_active Expired - Lifetime
- 1993-01-29 DE DE0624231T patent/DE624231T1/en active Pending
- 1993-02-04 MX MX9300604A patent/MX9300604A/en unknown
- 1993-07-29 US US08/099,283 patent/US5334110A/en not_active Expired - Lifetime
-
1994
- 1994-04-18 US US08/229,252 patent/US5405297A/en not_active Expired - Fee Related
-
1995
- 1995-01-27 US US08/379,055 patent/US5496221A/en not_active Expired - Fee Related
- 1995-11-03 US US08/552,831 patent/US5575727A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5496221A (en) | 1996-03-05 |
| US5190502A (en) | 1993-03-02 |
| WO1993016300A1 (en) | 1993-08-19 |
| JP3271010B2 (en) | 2002-04-02 |
| DE624231T1 (en) | 1995-07-06 |
| ES2065866T3 (en) | 1997-09-16 |
| DE69310146T2 (en) | 1997-08-21 |
| ES2065866T1 (en) | 1995-03-01 |
| EP0624231A4 (en) | 1994-09-26 |
| US5334110A (en) | 1994-08-02 |
| MX9300604A (en) | 1993-08-01 |
| EP0624231A1 (en) | 1994-11-17 |
| ATE152221T1 (en) | 1997-05-15 |
| EP0624231B1 (en) | 1997-04-23 |
| AU3617693A (en) | 1993-09-03 |
| DE69310146D1 (en) | 1997-05-28 |
| US5575727A (en) | 1996-11-19 |
| AU659540B2 (en) | 1995-05-18 |
| JPH07503785A (en) | 1995-04-20 |
| US5405297A (en) | 1995-04-11 |
| CA2129384A1 (en) | 1993-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2129384C (en) | Belt tensioning system, belt tensioner therefor and methods of making the same | |
| US5423723A (en) | Belt tensioning system and belt tensioner therefor | |
| CA1251659A (en) | Belt tensioner and method of making the same | |
| CA2070378C (en) | Belt tensioner and method of making the same | |
| JPH0248776B2 (en) | ||
| CA2282970A1 (en) | Tensioner | |
| DE19641227A1 (en) | Vehicle seat belt tensioner | |
| US20040063531A1 (en) | Bi-directional belt tensioner | |
| EP1488136A1 (en) | Initial belt tensioner | |
| JP3118052B2 (en) | Tensioner | |
| CA2065389C (en) | Belt tensioner, pads therefor and methods of making same | |
| US5250009A (en) | Belt tensioner and method of making the same | |
| US20200370627A1 (en) | Belt tensioner with sliding pulley | |
| US5254048A (en) | Belt tensioning system, belt tensioner therefor and methods of making the same | |
| US5186690A (en) | Autotensioner | |
| JP2909495B2 (en) | Belt tensioner, belt tensioner and belt tensioner actuator | |
| JPH04505956A (en) | Belt tensioner and its manufacturing method | |
| JPH02253035A (en) | Automatic tensioner | |
| US5029387A (en) | Method of making a belt tensioning system | |
| JPS5936769Y2 (en) | Timing belt tensioner device | |
| JPH0749109Y2 (en) | Auto tensioner | |
| JPH0430450Y2 (en) | ||
| JPH053800Y2 (en) | ||
| JPH062746A (en) | Auto-tensioner | |
| JPH068156A (en) | Attachment/detachment jig for nut locking ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |